EPA Method 8240A Sys Perf Check Cmpds

24R,25-Dihydroxyvitamin D3, 100μg/ml, 1ml

Methanol QC Reference Mixture III n-Butyl sulfide, 0.5 ppm (weight S by weight) in 99.9 % methanol; units: 1x10mL, 5x10mL

Multiple-substance Stock Solution 6 Analytes, each 10µg/mL in acetonitrile; unit: 1x5mL Chiron No. Name CAS No. Concentration 0260.22 Fluoranthene [206-44-0] 10µg/mL 0263.20 Benzo[b]fluoranthene [205-99-2] 10µ